Asked about the timing of E.ON's price rises announcement, which came amid media focus on the death of Nelson Mandela and the devastating storms across the UK, Downing Street said, "It is for them to explain their decisions."
More top news
Labour leadership contender Yvette Cooper has accused Jeremy Corbyn of not being straight with people over the economy.
Most of Britain to remain dry & cloudy.
Former Foreign Secretary David Miliband has told ITV News that Britain could take around 25,000 refugees during the current crisis.